What actually moves your mortgage rate

Your mortgage interest rate is set by three things: the market rate on the day you lock in, your credit score, and the size of your down payment. You cannot control the market. You can control the other two, and both move the needle enough to matter.

A 30-year mortgage at 6.5% costs roughly $632 per month per $100,000 borrowed. At 6.0%, that same loan costs $599 per month. Over 30 years, that 0.5% difference adds up to about $12,000. Larger rate drops save even more. The work to lower your rate pays for itself.

The lender's job is to price risk. A higher credit score and a larger down payment both signal lower risk to them. They pass that lower risk back to you as a lower rate. Everything else—shopping around, locking in at the right time, choosing the right loan type—is about positioning yourself to show that lower risk or finding a lender who prices it differently.

Key Takeaways

  • Raising your credit score by 60 to 100 points can lower your rate by 0.25% to 0.5%, which saves tens of thousands of dollars over the life of the loan.
  • A larger down payment (20% or more) removes the need for mortgage insurance and signals lower risk, both of which reduce your rate.
  • Locking in your rate at the right time matters, but timing the market is difficult—locking in too early costs you if rates drop, and locking in too late costs you if they rise.
  • Shopping with at least three different lenders and comparing their Loan Estimates side by side often reveals rate differences of 0.25% to 0.75% for the same loan.
  • Paying points (prepaid interest) can lower your rate, but only makes financial sense if you stay in the home long enough to recoup the upfront cost.

Improve your credit score before you apply

Your credit score is the single fastest lever you control. Most lenders use your FICO score, which ranges from 300 to 850. The difference between a 620 score and a 740 score can be 1% or more on your rate. The difference between 740 and 800 is smaller but still meaningful—usually 0.25% to 0.5%.

Raising your score takes time, but the payoff is large. Start by pulling your credit report from all three bureaus—Equifax, Experian, and TransUnion—at annualcreditreport.com, which is free and official. Look for errors: accounts that are not yours, late payments that were actually on time, or duplicate entries. Dispute any errors in writing with the bureau that reported them. Corrections can take 30 to 45 days.

If your score is low because of recent late payments or high credit card balances, focus on those two things. Pay down credit card balances to below 30% of your credit limit on each card—a $5,000 limit with a $1,500 balance is better than a $5,000 balance. If you have missed payments, make all future payments on time. These changes show up in your score within one to two months.

Do not close old credit cards or open new ones while you are working on your score. Both hurt it. Do not apply for new credit in the 90 days before you apply for a mortgage, because each application triggers a hard inquiry that temporarily lowers your score.

Save for a larger down payment

A 20% down payment removes the requirement for private mortgage insurance (PMI), which is an insurance policy the lender requires when you put down less than 20%. PMI typically costs 0.5% to 1% of your loan amount per year. On a $300,000 mortgage with 10% down, PMI can add $1,500 to $3,000 per year to your payment.

Beyond removing PMI, a larger down payment signals to the lender that you have skin in the game and are less likely to default. This lower risk translates directly into a lower rate. The difference between 10% down and 20% down is often 0.25% to 0.5% on your rate, before you even account for the PMI savings.

If you cannot reach 20%, aim for at least 10%. The jump from 5% to 10% down saves you more in rate reduction and PMI than the jump from 10% to 20%, so if you have to choose, prioritize getting to 10% first. Some lenders offer loans with 3% down, but the rate penalty and PMI cost are steep—only use these if you have no other option.

Shop with multiple lenders and compare Loan Estimates

Lenders price the same loan differently. One lender might offer you 6.5% while another offers 6.25% for an identical loan. The only way to know is to shop. Get quotes from at least three lenders: a bank, a mortgage broker, and an online lender. Each has different overhead and pricing.

When you request a quote, provide the same information to each lender: your down payment amount, your credit score range, the loan amount, and the property address. Ask each one for a Loan Estimate, which is a standardized form that shows the interest rate, the annual percentage rate (APR), the loan amount, the monthly payment, and all closing costs. The APR is more useful than the rate alone because it includes fees, so comparing APRs across lenders is more accurate than comparing rates.

Do all your shopping within a 45-day window. Multiple inquiries from mortgage lenders within that window count as a single inquiry on your credit report, so your score takes only one small hit instead of three. After 45 days, each new inquiry is counted separately and hurts your score more.

Compare the Loan Estimates line by line. Look for differences in the interest rate, the APR, and the total closing costs. A lender with a slightly higher rate but much lower closing costs might be the better deal, especially if you plan to stay in the home for a long time. Use an online mortgage calculator to run the numbers: plug in each lender's rate and costs, and see which one results in the lowest total payment over the time you expect to own the home.

Understand rate locks and when to use them

A rate lock is a may provide from the lender that your interest rate will not change between the day you lock it in and the day you close. Rate locks typically last 30, 45, or 60 days. If rates fall after you lock, you are stuck at your locked rate. If rates rise, you are protected.

The timing decision is hard because no one knows where rates will go. A common strategy is to lock in when rates are near their recent lows and you are comfortable with the rate. If rates drop further after you lock, some lenders offer a one-time rate reduction (called a "float down"), but this is rare and usually costs a fee. If you are uncertain, lock in sooner rather than later—the cost of locking in early is usually smaller than the cost of rates rising after you decide to wait.

If you are not yet ready to close (because your home inspection is pending, or your appraisal is in progress), ask the lender about a "float down" option or a longer lock period. Some lenders offer 90-day locks at a slightly higher rate, which gives you more time without the risk of your rate expiring.

Consider paying points to lower your rate

A point is 1% of your loan amount paid upfront to the lender in exchange for a lower interest rate. On a $300,000 loan, one point costs $3,000. Each point typically lowers your rate by 0.25%, though this varies by lender and market conditions.

Paying points only makes sense if you stay in the home long enough to recoup the upfront cost through the monthly savings. If you pay $3,000 in points and save $50 per month on your payment, you break even after 60 months (5 years). If you plan to sell or refinance before then, paying points loses you money.

Ask your lender for a comparison: show me the rate with zero points, one point, and two points, along with the monthly payment for each. Then calculate the break-even point for each scenario. If you plan to stay in the home for at least 7 to 10 years, paying one point often makes sense. Paying two or more points rarely does, unless rates are unusually high.

Refinance when rates drop significantly

If you already have a mortgage and rates fall by 0.5% or more, refinancing may save you money. A refinance is a new mortgage that pays off your old one. You pay closing costs again (usually 2% to 5% of the loan amount), so the rate drop has to be large enough to offset those costs.

Use a refinance calculator to run the numbers. Input your current loan balance, your current rate, the new rate you are offered, the closing costs, and the number of years you plan to stay in the home. The calculator will tell you how many months it takes to break even. If that break-even point is less than the time you plan to stay, refinancing makes sense.

Refinancing also resets your loan term. If you have 25 years left on a 30-year mortgage and you refinance into a new 30-year mortgage, you are extending your payoff date by 5 years. To avoid this, refinance into a loan with the same payoff date as your current one, or a shorter one if you can afford the higher payment.

Frequently Asked Questions

Does my employment history affect my mortgage rate?

No, employment history does not affect your rate directly. Lenders care about your income and your ability to repay, which they verify through recent pay stubs and tax returns. A stable job helps you get approved, but it does not move your rate. Your credit score, down payment, and the market rate are what determine your rate.

Can I negotiate my mortgage rate with the lender?

Not in the traditional sense. Rates are set by the market and the lender's pricing model based on your risk profile. What you can do is shop around—different lenders will offer different rates for the same loan. You can also ask if the lender will match a competitor's rate, though most will not. The real negotiation is choosing which lender to work with.

What is the difference between a fixed rate and an adjustable rate?

A fixed-rate mortgage locks in the same interest rate for the entire loan term, usually 15 or 30 years. An adjustable-rate mortgage (ARM) has a lower rate for an initial period (often 3, 5, 7, or 10 years), then adjusts annually based on market conditions. ARMs start with a lower rate, but your payment can rise significantly after the initial period. Fixed rates are simpler and more predictable; ARMs are riskier but cheaper upfront.

How much does shopping around actually save?

The savings vary, but shopping with three lenders typically reveals rate differences of 0.25% to 0.75%. On a $300,000 loan, a 0.5% difference saves about $150 per month, or $54,000 over 30 years. The time spent shopping—usually 2 to 3 hours—is worth it for that return.

Should I pay off debt before applying for a mortgage?

Paying down high credit card balances helps your credit score and lowers your debt-to-income ratio, both of which improve your rate. Paying off a car loan or student loan does not help your rate much, because those are installment loans that lenders expect you to have. Focus on credit card debt first, then apply.